/*******************************************************************************
 * Copyright (c) 2005, 2014 springside.github.io
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 *******************************************************************************/
package cn.tang.tframe.sdm.web.shiro.realm;

import cn.tang.tframe.common.utils.lang.StringUtils;
import org.apache.shiro.authc.AuthenticationException;
import org.apache.shiro.authc.AuthenticationInfo;
import org.apache.shiro.authc.AuthenticationToken;
import org.apache.shiro.authc.SimpleAuthenticationInfo;
import org.apache.shiro.authz.AuthorizationInfo;
import org.apache.shiro.realm.AuthorizingRealm;
import org.apache.shiro.subject.PrincipalCollection;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.Serializable;

public abstract class AbstractQtucShiroRealm<PK extends Serializable,TK> extends AuthorizingRealm {

	Logger logger = LoggerFactory.getLogger(this.getClass());

	/**
	 * 认证回调函数,登录时调用.
	 */
	@Override
	protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken authcToken) throws AuthenticationException {
		TK token = (TK) authcToken;
		if (null == token) {
			logger.error("no token when login");
			throw new AuthenticationException("用户名密码有误");
		}
		/**
		 * dologin getuserinfo set shirouser
		 */
		logger.debug("start login token={} ", token);
		IShiroUser<PK> shiroUser = this.retriveFromToken(token);
		if(null != shiroUser && StringUtils.isNotBlank(shiroUser.getToken())){
			SimpleAuthenticationInfo simpleAuthenticationInfo = new SimpleAuthenticationInfo(shiroUser,shiroUser.getToken(),shiroUser.getToken());
			return simpleAuthenticationInfo;
		} else {
			logger.error("login fail: authcToken={}", authcToken);
			return null;
		}
	}
	protected abstract IShiroUser<PK> retriveFromToken(TK token);
	/**
	 * 授权查询回调函数, 进行鉴权但缓存中无用户的授权信息时调用.
	 */
	@Override
	protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principals) {
		return null;
	}
}
